<?php

////////////////////////////////////////////////////
// PHPMailer - PHP email class
//
// Class for sending email using either
// sendmail, PHP mail(), or SMTP.  Methods are
// based upon the standard AspEmail(tm) classes.
//
// Copyright (C) 2001 - 2003  Brent R. Matzelle
//
// License: LGPL, see LICENSE
////////////////////////////////////////////////////

/**
 * PHPMailer - PHP email transport class
 * @package PHPMailer
 * @author Brent R. Matzelle
 * @copyright 2001 - 2003 Brent R. Matzelle
 */
class PHPMailer {
  /////////////////////////////////////////////////
  // PUBLIC VARIABLES
  /////////////////////////////////////////////////

  /**
   * Email priority (1 = High, 3 = Normal, 5 = low).
   * @var int
   */
  var $Priority = 3;
  /**
   * Sets the CharSet of the message.
   * @var string
   */
  var $CharSet = "iso-8859-1";
  /**
   * Sets the Content-type of the message.
   * @var string
   */
  var $ContentType = "text/plain";
  /**
   * Sets the Encoding of the message. Options for this are "8bit",
   * "7bit", "binary", "base64", and "quoted-printable".
   * @var string
   */
  var $Encoding = "8bit";
  /**
   * Holds the most recent mailer error message.
   * @var string
   */
  var $ErrorInfo = "";
  /**
   * Sets the From email address for the message.
   * @var string
   */
  var $From = "root@localhost";
  /**
   * Sets the From name of the message.
   * @var string
   */
  var $FromName = "Root User";
  /**
   * Sets the Sender email (Return-Path) of the message.  If not empty,
   * will be sent via -f to sendmail or as 'MAIL FROM' in smtp mode.
   * @var string
   */
  var $Sender = "";
  /**
   * Sets the Subject of the message.
   * @var string
   */
  var $Subject = "";
  /**
   * Sets the Body of the message.  This can be either an HTML or text body.
   * If HTML then run IsHTML(true).
   * @var string
   */
  var $Body = "";
  /**
   * Sets the text-only body of the message.  This automatically sets the
   * email to multipart/alternative.  This body can be read by mail
   * clients that do not have HTML email capability such as mutt. Clients
   * that can read HTML will view the normal Body.
   * @var string
   */
  var $AltBody = "";
  /**
   * Sets word wrapping on the body of the message to a given number of
   * characters.
   * @var int
   */
  var $WordWrap = 0;
  /**
   * Method to send mail: ("mail", "sendmail", or "smtp").
   * @var string
   */
  var $Mailer = "mail";
  /**
   * Sets the path of the sendmail program.
   * @var string
   */
  var $Sendmail = "/usr/sbin/sendmail";
  /**
   * Path to PHPMailer plugins.  This is now only useful if the SMTP class
   * is in a different directory than the PHP include path.
   * @var string
   */
  var $PluginDir = "";
  /**
   *  Holds PHPMailer version.
   *  @var string
   */
  var $Version = "1.73";
  /**
   * Sets the email address that a reading confirmation will be sent.
   * @var string
   */
  var $ConfirmReadingTo = "";
  /**
   *  Sets the hostname to use in Message-Id and Received headers
   *  and as default HELO string. If empty, the value returned
   *  by SERVER_NAME is used or 'localhost.localdomain'.
   *  @var string
   */
  var $Hostname = "";

  /////////////////////////////////////////////////
  // SMTP VARIABLES
  /////////////////////////////////////////////////
  /**
   *  Sets the SMTP hosts.  All hosts must be separated by a
   *  semicolon.  You can also specify a different port
   *  for each host by using this format: [hostname:port]
   *  (e.g. "smtp1.example.com:25;smtp2.example.com").
   *  Hosts will be tried in order.
   *  @var string
   */
  var $Host = "localhost";
  /**
   *  Sets the default SMTP server port.
   *  @var int
   */
  var $Port = 25;
  /**
   *  Sets the SMTP HELO of the message (Default is $Hostname).
   *  @var string
   */
  var $Helo = "";
  /**
   *  Sets SMTP authentication. Utilizes the Username and Password variables.
   *  @var bool
   */
  var $SMTPAuth = false;
  /**
   *  Sets SMTP username.
   *  @var string
   */
  var $Username = "";
  /**
   *  Sets SMTP password.
   *  @var string
   */
  var $Password = "";
  /**
   *  Sets the SMTP server timeout in seconds. This function will not
   *  work with the win32 version.
   *  @var int
   */
  var $Timeout = 10;
  /**
   *  Sets SMTP class debugging on or off.
   *  @var bool
   */
  var $SMTPDebug = false;
  /**
   * Prevents the SMTP connection from being closed after each mail 
   * sending.  If this is set to true then to close the connection 
   * requires an explicit call to SmtpClose(). 
   * @var bool
   */
  var $SMTPKeepAlive = false;

  /*   * #@+
   * @access private
   */
  var $smtp = NULL;
  var $to = array();
  var $cc = array();
  var $bcc = array();
  var $ReplyTo = array();
  var $attachment = array();
  var $CustomHeader = array();
  var $message_type = "";
  var $boundary = array();
  var $language = array();
  var $error_count = 0;
  var $LE = "\n";
  /*   * #@- */

  /////////////////////////////////////////////////
  // VARIABLE METHODS
  /////////////////////////////////////////////////

  /**
   * Sets message type to HTML.  
   * @param bool $bool
   * @return void
   */
  function IsHTML($bool) {
    if ($bool == true)
      $this->ContentType = "text/html";
    else
      $this->ContentType = "text/plain";
  }

  /**
   * Sets Mailer to send message using SMTP.
   * @return void
   */
  function IsSMTP() {
    $this->Mailer = "smtp";
  }

  /**
   * Sets Mailer to send message using PHP mail() function.
   * @return void
   */
  function IsMail() {
    $this->Mailer = "mail";
  }

  /**
   * Sets Mailer to send message using the $Sendmail program.
   * @return void
   */
  function IsSendmail() {
    $this->Mailer = "sendmail";
  }

  /**
   * Sets Mailer to send message using the qmail MTA.
   * @return void
   */
  function IsQmail() {
    $this->Sendmail = "/var/qmail/bin/sendmail";
    $this->Mailer = "sendmail";
  }

  /////////////////////////////////////////////////
  // RECIPIENT METHODS
  /////////////////////////////////////////////////

  /**
   * Adds a "To" address.  
   * @param string $address
   * @param string $name
   * @return void
   */
  function AddAddress($address, $name = "") {
    $cur = count($this->to);
    $this->to[$cur][0] = trim($address);
    $this->to[$cur][1] = $name;
  }

  /**
   * Adds a "Cc" address. Note: this function works
   * with the SMTP mailer on win32, not with the "mail"
   * mailer.
   * @param string $address
   * @param string $name
   * @return void
   */
  function AddCC($address, $name = "") {
    $cur = count($this->cc);
    $this->cc[$cur][0] = trim($address);
    $this->cc[$cur][1] = $name;
  }

  /**
   * Adds a "Bcc" address. Note: this function works
   * with the SMTP mailer on win32, not with the "mail"
   * mailer.  
   * @param string $address
   * @param string $name
   * @return void
   */
  function AddBCC($address, $name = "") {
    $cur = count($this->bcc);
    $this->bcc[$cur][0] = trim($address);
    $this->bcc[$cur][1] = $name;
  }

  /**
   * Adds a "Reply-to" address.
   * @param string $address
   * @param string $name
   * @return void
   */
  function AddReplyTo($address, $name = "") {
    $cur = count($this->ReplyTo);
    $this->ReplyTo[$cur][0] = trim($address);
    $this->ReplyTo[$cur][1] = $name;
  }

  /////////////////////////////////////////////////
  // MAIL SENDING METHODS
  /////////////////////////////////////////////////

  /**
   * Creates message and assigns Mailer. If the message is
   * not sent successfully then it returns false.  Use the ErrorInfo
   * variable to view description of the error.
   * @return bool
   */
  function Send() {
    $header = "";
    $body = "";
    $result = true;
    if ((count($this->to) + count($this->cc) + count($this->bcc)) < 1) {
      $this->SetError($this->Lang("provide_address"));
      return false;
    }

    // Set whether the message is multipart/alternative
    if (!empty($this->AltBody))
      $this->ContentType = "multipart/alternative";

    $this->error_count = 0; // reset errors
    $this->SetMessageType();
    $header .= $this->CreateHeader();
    $body = $this->CreateBody();

    if ($body == "") {
      return false;
    }

    // Choose the mailer
    switch ($this->Mailer) {
      case "sendmail":
        $result = $this->SendmailSend($header, $body);
        break;
      case "mail":
        $result = $this->MailSend($header, $body);
        break;
      case "smtp":
        $result = $this->SmtpSend($header, $body);
        break;
      default:
        $this->SetError($this->Mailer . $this->Lang("mailer_not_supported"));
        $result = false;
        break;
    }

    return $result;
  }

  /**
   * Sends mail using the $Sendmail program.  
   * @access private
   * @return bool
   */
  function SendmailSend($header, $body) {
    if ($this->Sender != "")
      $sendmail = sprintf("%s -oi -f %s -t", $this->Sendmail, $this->Sender);
    else
      $sendmail = sprintf("%s -oi -t", $this->Sendmail);

    if (!@$mail = popen($sendmail, "w")) {
      $this->SetError($this->Lang("execute") . $this->Sendmail);
      return false;
    }

    fputs($mail, $header);
    fputs($mail, $body);

    $result = pclose($mail) >> 8 & 0xFF;
    if ($result != 0) {
      $this->SetError($this->Lang("execute") . $this->Sendmail);
      return false;
    }

    return true;
  }

  /**
   * Sends mail using the PHP mail() function.
   * @access private
   * @return bool
   */
  function MailSend($header, $body) {
    $to = "";
    for ($i = 0; $i < count($this->to); $i++) {
      if ($i != 0) {
        $to .= ", ";
      }
      $to .= $this->to[$i][0];
    }

    if ($this->Sender != "" && strlen(ini_get("safe_mode")) < 1) {
      $old_from = ini_get("sendmail_from");
      ini_set("sendmail_from", $this->Sender);
      $params = sprintf("-oi -f %s", $this->Sender);
      $rt = @mail($to, $this->EncodeHeader($this->Subject), $body,
                      $header, $params);
    }
    else
      $rt = @mail($to, $this->EncodeHeader($this->Subject), $body, $header);

    if (isset($old_from))
      ini_set("sendmail_from", $old_from);

    if (!$rt) {
      $this->SetError($this->Lang("instantiate"));
      return false;
    }

    return true;
  }

  /**
   * Sends mail via SMTP using PhpSMTP (Author:
   * Chris Ryan).  Returns bool.  Returns false if there is a
   * bad MAIL FROM, RCPT, or DATA input.
   * @access private
   * @return bool
   */
  function SmtpSend($header, $body) {
    //include_once($this->PluginDir . "class.smtp.php");
    $error = "";
    $bad_rcpt = array();

    if (!$this->SmtpConnect())
      return false;

    $smtp_from = ($this->Sender == "") ? $this->From : $this->Sender;
    if (!$this->smtp->Mail($smtp_from)) {
      $error = $this->Lang("from_failed") . $smtp_from;
      $this->SetError($error);
      $this->smtp->Reset();
      return false;
    }

    // Attempt to send attach all recipients
    for ($i = 0; $i < count($this->to); $i++) {
      if (!$this->smtp->Recipient($this->to[$i][0]))
        $bad_rcpt[] = $this->to[$i][0];
    }
    for ($i = 0; $i < count($this->cc); $i++) {
      if (!$this->smtp->Recipient($this->cc[$i][0]))
        $bad_rcpt[] = $this->cc[$i][0];
    }
    for ($i = 0; $i < count($this->bcc); $i++) {
      if (!$this->smtp->Recipient($this->bcc[$i][0]))
        $bad_rcpt[] = $this->bcc[$i][0];
    }

    if (count($bad_rcpt) > 0) { // Create error message
      for ($i = 0; $i < count($bad_rcpt); $i++) {
        if ($i != 0) {
          $error .= ", ";
        }
        $error .= $bad_rcpt[$i];
      }
      $error = $this->Lang("recipients_failed") . $error;
      $this->SetError($error);
      $this->smtp->Reset();
      return false;
    }

    if (!$this->smtp->Data($header . $body)) {
      $this->SetError($this->Lang("data_not_accepted"));
      $this->smtp->Reset();
      return false;
    }
    if ($this->SMTPKeepAlive == true)
      $this->smtp->Reset();
    else
      $this->SmtpClose();

    return true;
  }

  /**
   * Initiates a connection to an SMTP server.  Returns false if the 
   * operation failed.
   * @access private
   * @return bool
   */
  function SmtpConnect() {
    if ($this->smtp == NULL) {
      $this->smtp = new SMTP();
    }

    $this->smtp->do_debug = $this->SMTPDebug;
    $hosts = explode(";", $this->Host);
    $index = 0;
    $connection = ($this->smtp->Connected());

    // Retry while there is no connection
    while ($index < count($hosts) && $connection == false) {
      if (strstr($hosts[$index], ":"))
        list($host, $port) = explode(":", $hosts[$index]);
      else {
        $host = $hosts[$index];
        $port = $this->Port;
      }

      if ($this->smtp->Connect($host, $port, $this->Timeout)) {
        if ($this->Helo != '')
          $this->smtp->Hello($this->Helo);
        else
          $this->smtp->Hello($this->ServerHostname());

        if ($this->SMTPAuth) {
          if (!$this->smtp->Authenticate($this->Username,
                          $this->Password)) {
            $this->SetError($this->Lang("authenticate"));
            $this->smtp->Reset();
            $connection = false;
          }
        }
        $connection = true;
      }
      $index++;
    }
    if (!$connection)
      $this->SetError($this->Lang("connect_host"));

    return $connection;
  }

  /**
   * Closes the active SMTP session if one exists.
   * @return void
   */
  function SmtpClose() {
    if ($this->smtp != NULL) {
      if ($this->smtp->Connected()) {
        $this->smtp->Quit();
        $this->smtp->Close();
      }
    }
  }

  /**
   * Sets the language for all class error messages.  Returns false 
   * if it cannot load the language file.  The default language type
   * is English.
   * @param string $lang_type Type of language (e.g. Portuguese: "br")
   * @param string $lang_path Path to the language file directory
   * @access public
   * @return bool
   */
  function SetLanguage($lang_type, $lang_path = "language/") {
    if (file_exists($lang_path . 'phpmailer.lang-' . $lang_type . '.php'))
      include($lang_path . 'phpmailer.lang-' . $lang_type . '.php');
    else if (file_exists($lang_path . 'phpmailer.lang-en.php'))
      include($lang_path . 'phpmailer.lang-en.php');
    else {
      $this->SetError("Could not load language file");
      return false;
    }
    $this->language = $PHPMAILER_LANG;

    return true;
  }

  /////////////////////////////////////////////////
  // MESSAGE CREATION METHODS
  /////////////////////////////////////////////////

  /**
   * Creates recipient headers.  
   * @access private
   * @return string
   */
  function AddrAppend($type, $addr) {
    $addr_str = $type . ": ";
    $addr_str .= $this->AddrFormat($addr[0]);
    if (count($addr) > 1) {
      for ($i = 1; $i < count($addr); $i++)
        $addr_str .= ", " . $this->AddrFormat($addr[$i]);
    }
    $addr_str .= $this->LE;

    return $addr_str;
  }

  /**
   * Formats an address correctly. 
   * @access private
   * @return string
   */
  function AddrFormat($addr) {
    if (empty($addr[1]))
      $formatted = $addr[0];
    else {
      $formatted = $this->EncodeHeader($addr[1], 'phrase') . " <" .
              $addr[0] . ">";
    }

    return $formatted;
  }

  /**
   * Wraps message for use with mailers that do not
   * automatically perform wrapping and for quoted-printable.
   * Original written by philippe.  
   * @access private
   * @return string
   */
  function WrapText($message, $length, $qp_mode = false) {
    $soft_break = ($qp_mode) ? sprintf(" =%s", $this->LE) : $this->LE;

    $message = $this->FixEOL($message);
    if (substr($message, -1) == $this->LE)
      $message = substr($message, 0, -1);

    $line = explode($this->LE, $message);
    $message = "";
    for ($i = 0; $i < count($line); $i++) {
      $line_part = explode(" ", $line[$i]);
      $buf = "";
      for ($e = 0; $e < count($line_part); $e++) {
        $word = $line_part[$e];
        if ($qp_mode and (strlen($word) > $length)) {
          $space_left = $length - strlen($buf) - 1;
          if ($e != 0) {
            if ($space_left > 20) {
              $len = $space_left;
              if (substr($word, $len - 1, 1) == "=")
                $len--;
              elseif (substr($word, $len - 2, 1) == "=")
                $len -= 2;
              $part = substr($word, 0, $len);
              $word = substr($word, $len);
              $buf .= " " . $part;
              $message .= $buf . sprintf("=%s", $this->LE);
            }
            else {
              $message .= $buf . $soft_break;
            }
            $buf = "";
          }
          while (strlen($word) > 0) {
            $len = $length;
            if (substr($word, $len - 1, 1) == "=")
              $len--;
            elseif (substr($word, $len - 2, 1) == "=")
              $len -= 2;
            $part = substr($word, 0, $len);
            $word = substr($word, $len);

            if (strlen($word) > 0)
              $message .= $part . sprintf("=%s", $this->LE);
            else
              $buf = $part;
          }
        }
        else {
          $buf_o = $buf;
          $buf .= ( $e == 0) ? $word : (" " . $word);

          if (strlen($buf) > $length and $buf_o != "") {
            $message .= $buf_o . $soft_break;
            $buf = $word;
          }
        }
      }
      $message .= $buf . $this->LE;
    }

    return $message;
  }

  /**
   * Set the body wrapping.
   * @access private
   * @return void
   */
  function SetWordWrap() {
    if ($this->WordWrap < 1)
      return;

    switch ($this->message_type) {
      case "alt":
      // fall through
      case "alt_attachments":
        $this->AltBody = $this->WrapText($this->AltBody, $this->WordWrap);
        break;
      default:
        $this->Body = $this->WrapText($this->Body, $this->WordWrap);
        break;
    }
  }

  /**
   * Assembles message header.  
   * @access private
   * @return string
   */
  function CreateHeader() {
    $result = "";

    // Set the boundaries
    $uniq_id = md5(uniqid(time()));
    $this->boundary[1] = "b1_" . $uniq_id;
    $this->boundary[2] = "b2_" . $uniq_id;

    $result .= $this->HeaderLine("Date", $this->RFCDate());
    if ($this->Sender == "")
      $result .= $this->HeaderLine("Return-Path", trim($this->From));
    else
      $result .= $this->HeaderLine("Return-Path", trim($this->Sender));

    // To be created automatically by mail()
    if ($this->Mailer != "mail") {
      if (count($this->to) > 0)
        $result .= $this->AddrAppend("To", $this->to);
      else if (count($this->cc) == 0)
        $result .= $this->HeaderLine("To", "undisclosed-recipients:;");
      if (count($this->cc) > 0)
        $result .= $this->AddrAppend("Cc", $this->cc);
    }

    $from = array();
    $from[0][0] = trim($this->From);
    $from[0][1] = $this->FromName;
    $result .= $this->AddrAppend("From", $from);

    // sendmail and mail() extract Bcc from the header before sending
    if ((($this->Mailer == "sendmail") || ($this->Mailer == "mail")) && (count($this->bcc) > 0))
      $result .= $this->AddrAppend("Bcc", $this->bcc);

    if (count($this->ReplyTo) > 0)
      $result .= $this->AddrAppend("Reply-to", $this->ReplyTo);

    // mail() sets the subject itself
    if ($this->Mailer != "mail")
      $result .= $this->HeaderLine("Subject", $this->EncodeHeader(trim($this->Subject)));

    $result .= sprintf("Message-ID: <%s@%s>%s", $uniq_id, $this->ServerHostname(), $this->LE);
    $result .= $this->HeaderLine("X-Priority", $this->Priority);
    $result .= $this->HeaderLine("X-Mailer", "PHPMailer [version " . $this->Version . "]");

    if ($this->ConfirmReadingTo != "") {
      $result .= $this->HeaderLine("Disposition-Notification-To",
                      "<" . trim($this->ConfirmReadingTo) . ">");
    }

    // Add custom headers
    for ($index = 0; $index < count($this->CustomHeader); $index++) {
      $result .= $this->HeaderLine(trim($this->CustomHeader[$index][0]),
                      $this->EncodeHeader(trim($this->CustomHeader[$index][1])));
    }
    $result .= $this->HeaderLine("MIME-Version", "1.0");

    switch ($this->message_type) {
      case "plain":
        $result .= $this->HeaderLine("Content-Transfer-Encoding", $this->Encoding);
        $result .= sprintf("Content-Type: %s; charset=\"%s\"",
                        $this->ContentType, $this->CharSet);
        break;
      case "attachments":
      // fall through
      case "alt_attachments":
        if ($this->InlineImageExists()) {
          $result .= sprintf("Content-Type: %s;%s\ttype=\"text/html\";%s\tboundary=\"%s\"%s",
                          "multipart/related", $this->LE, $this->LE,
                          $this->boundary[1], $this->LE);
        } else {
          $result .= $this->HeaderLine("Content-Type", "multipart/mixed;");
          $result .= $this->TextLine("\tboundary=\"" . $this->boundary[1] . '"');
        }
        break;
      case "alt":
        $result .= $this->HeaderLine("Content-Type", "multipart/alternative;");
        $result .= $this->TextLine("\tboundary=\"" . $this->boundary[1] . '"');
        break;
    }

    if ($this->Mailer != "mail")
      $result .= $this->LE . $this->LE;

    return $result;
  }

  /**
   * Assembles the message body.  Returns an empty string on failure.
   * @access private
   * @return string
   */
  function CreateBody() {
    $result = "";

    $this->SetWordWrap();

    switch ($this->message_type) {
      case "alt":
        $result .= $this->GetBoundary($this->boundary[1], "",
                        "text/plain", "");
        $result .= $this->EncodeString($this->AltBody, $this->Encoding);
        $result .= $this->LE . $this->LE;
        $result .= $this->GetBoundary($this->boundary[1], "",
                        "text/html", "");

        $result .= $this->EncodeString($this->Body, $this->Encoding);
        $result .= $this->LE . $this->LE;

        $result .= $this->EndBoundary($this->boundary[1]);
        break;
      case "plain":
        $result .= $this->EncodeString($this->Body, $this->Encoding);
        break;
      case "attachments":
        $result .= $this->GetBoundary($this->boundary[1], "", "", "");
        $result .= $this->EncodeString($this->Body, $this->Encoding);
        $result .= $this->LE;

        $result .= $this->AttachAll();
        break;
      case "alt_attachments":
        $result .= sprintf("--%s%s", $this->boundary[1], $this->LE);
        $result .= sprintf("Content-Type: %s;%s" .
                        "\tboundary=\"%s\"%s",
                        "multipart/alternative", $this->LE,
                        $this->boundary[2], $this->LE . $this->LE);

        // Create text body
        $result .= $this->GetBoundary($this->boundary[2], "",
                        "text/plain", "") . $this->LE;

        $result .= $this->EncodeString($this->AltBody, $this->Encoding);
        $result .= $this->LE . $this->LE;

        // Create the HTML body
        $result .= $this->GetBoundary($this->boundary[2], "",
                        "text/html", "") . $this->LE;

        $result .= $this->EncodeString($this->Body, $this->Encoding);
        $result .= $this->LE . $this->LE;

        $result .= $this->EndBoundary($this->boundary[2]);

        $result .= $this->AttachAll();
        break;
    }
    if ($this->IsError())
      $result = "";

    return $result;
  }

  /**
   * Returns the start of a message boundary.
   * @access private
   */
  function GetBoundary($boundary, $charSet, $contentType, $encoding) {
    $result = "";
    if ($charSet == "") {
      $charSet = $this->CharSet;
    }
    if ($contentType == "") {
      $contentType = $this->ContentType;
    }
    if ($encoding == "") {
      $encoding = $this->Encoding;
    }

    $result .= $this->TextLine("--" . $boundary);
    $result .= sprintf("Content-Type: %s; charset = \"%s\"",
                    $contentType, $charSet);
    $result .= $this->LE;
    $result .= $this->HeaderLine("Content-Transfer-Encoding", $encoding);
    $result .= $this->LE;

    return $result;
  }

  /**
   * Returns the end of a message boundary.
   * @access private
   */
  function EndBoundary($boundary) {
    return $this->LE . "--" . $boundary . "--" . $this->LE;
  }

  /**
   * Sets the message type.
   * @access private
   * @return void
   */
  function SetMessageType() {
    if (count($this->attachment) < 1 && strlen($this->AltBody) < 1)
      $this->message_type = "plain";
    else {
      if (count($this->attachment) > 0)
        $this->message_type = "attachments";
      if (strlen($this->AltBody) > 0 && count($this->attachment) < 1)
        $this->message_type = "alt";
      if (strlen($this->AltBody) > 0 && count($this->attachment) > 0)
        $this->message_type = "alt_attachments";
    }
  }

  /**
   * Returns a formatted header line.
   * @access private
   * @return string
   */
  function HeaderLine($name, $value) {
    return $name . ": " . $value . $this->LE;
  }

  /**
   * Returns a formatted mail line.
   * @access private
   * @return string
   */
  function TextLine($value) {
    return $value . $this->LE;
  }

  /////////////////////////////////////////////////
  // ATTACHMENT METHODS
  /////////////////////////////////////////////////

  /**
   * Adds an attachment from a path on the filesystem.
   * Returns false if the file could not be found
   * or accessed.
   * @param string $path Path to the attachment.
   * @param string $name Overrides the attachment name.
   * @param string $encoding File encoding (see $Encoding).
   * @param string $type File extension (MIME) type.
   * @return bool
   */
  function AddAttachment($path, $name = "", $encoding = "base64", $type = "application/octet-stream") {
    if (!@is_file($path)) {
      $this->SetError($this->Lang("file_access") . $path);
      return false;
    }

    $filename = basename($path);
    if ($name == "")
      $name = $filename;

    $cur = count($this->attachment);
    $this->attachment[$cur][0] = $path;
    $this->attachment[$cur][1] = $filename;
    $this->attachment[$cur][2] = $name;
    $this->attachment[$cur][3] = $encoding;
    $this->attachment[$cur][4] = $type;
    $this->attachment[$cur][5] = false; // isStringAttachment
    $this->attachment[$cur][6] = "attachment";
    $this->attachment[$cur][7] = 0;

    return true;
  }

  /**
   * Attaches all fs, string, and binary attachments to the message.
   * Returns an empty string on failure.
   * @access private
   * @return string
   */
  function AttachAll() {
    // Return text of body
    $mime = array();

    // Add all attachments
    for ($i = 0; $i < count($this->attachment); $i++) {
      // Check for string attachment
      $bString = $this->attachment[$i][5];
      if ($bString)
        $string = $this->attachment[$i][0];
      else
        $path = $this->attachment[$i][0];

      $filename = $this->attachment[$i][1];
      $name = $this->attachment[$i][2];
      $encoding = $this->attachment[$i][3];
      $type = $this->attachment[$i][4];
      $disposition = $this->attachment[$i][6];
      $cid = $this->attachment[$i][7];

      $mime[] = sprintf("--%s%s", $this->boundary[1], $this->LE);
      $mime[] = sprintf("Content-Type: %s; name=\"%s\"%s", $type, $name, $this->LE);
      $mime[] = sprintf("Content-Transfer-Encoding: %s%s", $encoding, $this->LE);

      if ($disposition == "inline")
        $mime[] = sprintf("Content-ID: <%s>%s", $cid, $this->LE);

      $mime[] = sprintf("Content-Disposition: %s; filename=\"%s\"%s",
                      $disposition, $name, $this->LE . $this->LE);

      // Encode as string attachment
      if ($bString) {
        $mime[] = $this->EncodeString($string, $encoding);
        if ($this->IsError()) {
          return "";
        }
        $mime[] = $this->LE . $this->LE;
      } else {
        $mime[] = $this->EncodeFile($path, $encoding);
        if ($this->IsError()) {
          return "";
        }
        $mime[] = $this->LE . $this->LE;
      }
    }

    $mime[] = sprintf("--%s--%s", $this->boundary[1], $this->LE);

    return join("", $mime);
  }

  /**
   * Encodes attachment in requested format.  Returns an
   * empty string on failure.
   * @access private
   * @return string
   */
  function EncodeFile($path, $encoding = "base64") {
    if (!@$fd = fopen($path, "rb")) {
      $this->SetError($this->Lang("file_open") . $path);
      return "";
    }
    if (PHP_VERSION < 6) {
      $magic_quotes = get_magic_quotes_runtime();
      ini_set("magic_quotes_runtime", 0);
    }
    $file_buffer = fread($fd, filesize($path));
    $file_buffer = $this->EncodeString($file_buffer, $encoding);
    fclose($fd);
    if (PHP_VERSION < 6) { ini_set("magic_quotes_runtime", $magic_quotes); }
    return $file_buffer;
  }

  /**
   * Encodes string to requested format. Returns an
   * empty string on failure.
   * @access private
   * @return string
   */
  function EncodeString($str, $encoding = "base64") {
    $encoded = "";
    switch (strtolower($encoding)) {
      case "base64":
        // chunk_split is found in PHP >= 3.0.6
        $encoded = chunk_split(base64_encode($str), 76, $this->LE);
        break;
      case "7bit":
      case "8bit":
        $encoded = $this->FixEOL($str);
        if (substr($encoded, -(strlen($this->LE))) != $this->LE)
          $encoded .= $this->LE;
        break;
      case "binary":
        $encoded = $str;
        break;
      case "quoted-printable":
        $encoded = $this->EncodeQP($str);
        break;
      default:
        $this->SetError($this->Lang("encoding") . $encoding);
        break;
    }
    return $encoded;
  }

  /**
   * Encode a header string to best of Q, B, quoted or none.
   * @access private
   * @return string
   */
  function EncodeHeader($str, $position = 'text') {
    $x = 0;

    switch (strtolower($position)) {
      case 'phrase':
        if (!preg_match('/[\200-\377]/', $str)) {
          // Can't use addslashes as we don't know what value has magic_quotes_sybase.
          $encoded = addcslashes($str, "\0..\37\177\\\"");

          if (($str == $encoded) && !preg_match('/[^A-Za-z0-9!#$%&\'*+\/=?^_`{|}~ -]/', $str))
            return ($encoded);
          else
            return ("\"$encoded\"");
        }
        $x = preg_match_all('/[^\040\041\043-\133\135-\176]/', $str, $matches);
        break;
      case 'comment':
        $x = preg_match_all('/[()"]/', $str, $matches);
      // Fall-through
      case 'text':
      default:
        $x += preg_match_all('/[\000-\010\013\014\016-\037\177-\377]/', $str, $matches);
        break;
    }

    if ($x == 0)
      return ($str);

    $maxlen = 75 - 7 - strlen($this->CharSet);
    // Try to select the encoding which should produce the shortest output
    if (strlen($str) / 3 < $x) {
      $encoding = 'B';
      $encoded = base64_encode($str);
      $maxlen -= $maxlen % 4;
      $encoded = trim(chunk_split($encoded, $maxlen, "\n"));
    } else {
      $encoding = 'Q';
      $encoded = $this->EncodeQ($str, $position);
      $encoded = $this->WrapText($encoded, $maxlen, true);
      $encoded = str_replace("=" . $this->LE, "\n", trim($encoded));
    }

    $encoded = preg_replace('/^(.*)$/m', " =?" . $this->CharSet . "?$encoding?\\1?=", $encoded);
    $encoded = trim(str_replace("\n", $this->LE, $encoded));

    return $encoded;
  }

  /**
   * Encode string to quoted-printable.
   * @access private
   * @return string
   */
  function EncodeQP($str) {
    $encoded = $this->FixEOL($str);
    if (substr($encoded, -(strlen($this->LE))) != $this->LE)
      $encoded .= $this->LE;

    // Replace every high ascii, control and = characters
    $encoded = preg_replace('/([\000-\010\013\014\016-\037\075\177-\377])/e',
                    "'='.sprintf('%02X', ord('\\1'))", $encoded);
    // Replace every spaces and tabs when it's the last character on a line
    $encoded = preg_replace("/([\011\040])" . $this->LE . "/e",
                    "'='.sprintf('%02X', ord('\\1')).'" . $this->LE . "'", $encoded);

    // Maximum line length of 76 characters before CRLF (74 + space + '=')
    $encoded = $this->WrapText($encoded, 74, true);

    return $encoded;
  }

  /**
   * Encode string to q encoding.
   * @access private
   * @return string
   */
  function EncodeQ($str, $position = "text") {
    // There should not be any EOL in the string
    $encoded = preg_replace("[\r\n]", "", $str);

    switch (strtolower($position)) {
      case "phrase":
        $encoded = preg_replace("/([^A-Za-z0-9!*+\/ -])/e", "'='.sprintf('%02X', ord('\\1'))", $encoded);
        break;
      case "comment":
        $encoded = preg_replace("/([\(\)\"])/e", "'='.sprintf('%02X', ord('\\1'))", $encoded);
      case "text":
      default:
        // Replace every high ascii, control =, ? and _ characters
        $encoded = preg_replace('/([\000-\011\013\014\016-\037\075\077\137\177-\377])/e',
                        "'='.sprintf('%02X', ord('\\1'))", $encoded);
        break;
    }

    // Replace every spaces to _ (more readable than =20)
    $encoded = str_replace(" ", "_", $encoded);

    return $encoded;
  }

  /**
   * Adds a string or binary attachment (non-filesystem) to the list.
   * This method can be used to attach ascii or binary data,
   * such as a BLOB record from a database.
   * @param string $string String attachment data.
   * @param string $filename Name of the attachment.
   * @param string $encoding File encoding (see $Encoding).
   * @param string $type File extension (MIME) type.
   * @return void
   */
  function AddStringAttachment($string, $filename, $encoding = "base64", $type = "application/octet-stream") {
    // Append to $attachment array
    $cur = count($this->attachment);
    $this->attachment[$cur][0] = $string;
    $this->attachment[$cur][1] = $filename;
    $this->attachment[$cur][2] = $filename;
    $this->attachment[$cur][3] = $encoding;
    $this->attachment[$cur][4] = $type;
    $this->attachment[$cur][5] = true; // isString
    $this->attachment[$cur][6] = "attachment";
    $this->attachment[$cur][7] = 0;
  }

  /**
   * Adds an embedded attachment.  This can include images, sounds, and
   * just about any other document.  Make sure to set the $type to an
   * image type.  For JPEG images use "image/jpeg" and for GIF images
   * use "image/gif".
   * @param string $path Path to the attachment.
   * @param string $cid Content ID of the attachment.  Use this to identify
   *        the Id for accessing the image in an HTML form.
   * @param string $name Overrides the attachment name.
   * @param string $encoding File encoding (see $Encoding).
   * @param string $type File extension (MIME) type.
   * @return bool
   */
  function AddEmbeddedImage($path, $cid, $name = "", $encoding = "base64", $type = "application/octet-stream") {

    if (!@is_file($path)) {
      $this->SetError($this->Lang("file_access") . $path);
      return false;
    }

    $filename = basename($path);
    if ($name == "")
      $name = $filename;

    // Append to $attachment array
    $cur = count($this->attachment);
    $this->attachment[$cur][0] = $path;
    $this->attachment[$cur][1] = $filename;
    $this->attachment[$cur][2] = $name;
    $this->attachment[$cur][3] = $encoding;
    $this->attachment[$cur][4] = $type;
    $this->attachment[$cur][5] = false; // isStringAttachment
    $this->attachment[$cur][6] = "inline";
    $this->attachment[$cur][7] = $cid;

    return true;
  }

  /**
   * Returns true if an inline attachment is present.
   * @access private
   * @return bool
   */
  function InlineImageExists() {
    $result = false;
    for ($i = 0; $i < count($this->attachment); $i++) {
      if ($this->attachment[$i][6] == "inline") {
        $result = true;
        break;
      }
    }

    return $result;
  }

  /////////////////////////////////////////////////
  // MESSAGE RESET METHODS
  /////////////////////////////////////////////////

  /**
   * Clears all recipients assigned in the TO array.  Returns void.
   * @return void
   */
  function ClearAddresses() {
    $this->to = array();
  }

  /**
   * Clears all recipients assigned in the CC array.  Returns void.
   * @return void
   */
  function ClearCCs() {
    $this->cc = array();
  }

  /**
   * Clears all recipients assigned in the BCC array.  Returns void.
   * @return void
   */
  function ClearBCCs() {
    $this->bcc = array();
  }

  /**
   * Clears all recipients assigned in the ReplyTo array.  Returns void.
   * @return void
   */
  function ClearReplyTos() {
    $this->ReplyTo = array();
  }

  /**
   * Clears all recipients assigned in the TO, CC and BCC
   * array.  Returns void.
   * @return void
   */
  function ClearAllRecipients() {
    $this->to = array();
    $this->cc = array();
    $this->bcc = array();
  }

  /**
   * Clears all previously set filesystem, string, and binary
   * attachments.  Returns void.
   * @return void
   */
  function ClearAttachments() {
    $this->attachment = array();
  }

  /**
   * Clears all custom headers.  Returns void.
   * @return void
   */
  function ClearCustomHeaders() {
    $this->CustomHeader = array();
  }

  /////////////////////////////////////////////////
  // MISCELLANEOUS METHODS
  /////////////////////////////////////////////////

  /**
   * Adds the error message to the error container.
   * Returns void.
   * @access private
   * @return void
   */
  function SetError($msg) {
    $this->error_count++;
    $this->ErrorInfo = $msg;
  }

  /**
   * Returns the proper RFC 822 formatted date.
   * @access private
   * @return string
   */
  function RFCDate() {
    $tz = date("Z");
    $tzs = ($tz < 0) ? "-" : "+";
    $tz = abs($tz);
    $tz = ($tz / 3600) * 100 + ($tz % 3600) / 60;
    $result = sprintf("%s %s%04d", date("D, j M Y H:i:s"), $tzs, $tz);

    return $result;
  }

  /**
   * Returns the appropriate server variable.  Should work with both 
   * PHP 4.1.0+ as well as older versions.  Returns an empty string 
   * if nothing is found.
   * @access private
   * @return mixed
   */
  function ServerVar($varName) {
    global $HTTP_SERVER_VARS;
    global $HTTP_ENV_VARS;

    if (!isset($_SERVER)) {
      $_SERVER = $HTTP_SERVER_VARS;
      if (!isset($_SERVER["REMOTE_ADDR"]))
        $_SERVER = $HTTP_ENV_VARS; // must be Apache

    }

    if (isset($_SERVER[$varName]))
      return $_SERVER[$varName];
    else
      return "";
  }

  /**
   * Returns the server hostname or 'localhost.localdomain' if unknown.
   * @access private
   * @return string
   */
  function ServerHostname() {
    if ($this->Hostname != "")
      $result = $this->Hostname;
    elseif ($this->ServerVar('SERVER_NAME') != "")
      $result = $this->ServerVar('SERVER_NAME');
    else
      $result = "localhost.localdomain";

    return $result;
  }

  /**
   * Returns a message in the appropriate language.
   * @access private
   * @return string
   */
  function Lang($key) {
    if (count($this->language) < 1)
      $this->SetLanguage("en"); // set the default language

      if (isset($this->language[$key]))
      return $this->language[$key];
    else
      return "Language string failed to load: " . $key;
  }

  /**
   * Returns true if an error occurred.
   * @return bool
   */
  function IsError() {
    return ($this->error_count > 0);
  }

  /**
   * Changes every end of line from CR or LF to CRLF.
   * @access private
   * @return string
   */
  function FixEOL($str) {
    $str = str_replace("\r\n", "\n", $str);
    $str = str_replace("\r", "\n", $str);
    $str = str_replace("\n", $this->LE, $str);
    return $str;
  }

  /**
   * Adds a custom header.
   * @return void
   */
  function AddCustomHeader($custom_header) {
    $this->CustomHeader[] = explode(":", $custom_header, 2);
  }

}

class SMTP {

  /**
   *  SMTP server port
   *  @var int
   */
  var $SMTP_PORT = 25;
  /**
   *  SMTP reply line ending
   *  @var string
   */
  var $CRLF = "\r\n";
  /**
   *  Sets whether debugging is turned on
   *  @var bool
   */
  var $do_debug;       # the level of debug to perform

  /*   * #@+
   * @access private
   */
  var $smtp_conn;      # the socket to the server
  var $error;          # error if any on the last call
  var $helo_rply;      # the reply the server sent to us for HELO

  /*   * #@- */

  /**
   * Initialize the class so that the data is in a known state.
   * @access public
   * @return void
   */
  function SMTP() {
    $this->smtp_conn = 0;
    $this->error = null;
    $this->helo_rply = null;

    $this->do_debug = 0;
  }

  /*   * ***********************************************************
   *                    CONNECTION FUNCTIONS                  *
   * ********************************************************* */

  /**
   * Connect to the server specified on the port specified.
   * If the port is not specified use the default SMTP_PORT.
   * If tval is specified then a connection will try and be
   * established with the server for that number of seconds.
   * If tval is not specified the default is 30 seconds to
   * try on the connection.
   *
   * SMTP CODE SUCCESS: 220
   * SMTP CODE FAILURE: 421
   * @access public
   * @return bool
   */
  function Connect($host, $port=0, $tval=30) {
    # set the error val to null so there is no confusion
    $this->error = null;

    # make sure we are __not__ connected
    if ($this->connected()) {
      # ok we are connected! what should we do?
      # for now we will just give an error saying we
      # are already connected
      $this->error =
              array("error" => "Already connected to a server");
      return false;
    }

    if (empty($port)) {
      $port = $this->SMTP_PORT;
    }

    #connect to the smtp server
    $this->smtp_conn = fsockopen($host, # the host of the server
                    $port, # the port to use
                    $errno, # error number if any
                    $errstr, # error message if any
                    $tval);   # give up after ? secs
    # verify we connected properly
    if (empty($this->smtp_conn)) {
      $this->error = array("error" => "Failed to connect to server",
          "errno" => $errno,
          "errstr" => $errstr);
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": $errstr ($errno)" . $this->CRLF;
      }
      return false;
    }

    # sometimes the SMTP server takes a little longer to respond
    # so we will give it a longer timeout for the first read
    // Windows still does not have support for this timeout function
    if (substr(PHP_OS, 0, 3) != "WIN")
      socket_set_timeout($this->smtp_conn, $tval, 0);

    # get any announcement stuff
    $announce = $this->get_lines();

    # set the timeout  of any socket functions at 1/10 of a second
    //if(function_exists("socket_set_timeout"))
    //   socket_set_timeout($this->smtp_conn, 0, 100000);

    if ($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $this->CRLF . $announce;
    }

    return true;
  }

  /**
   * Performs SMTP authentication.  Must be run after running the
   * Hello() method.  Returns true if successfully authenticated.
   * @access public
   * @return bool
   */
  function Authenticate($username, $password) {
    // Start authentication
    fputs($this->smtp_conn, "AUTH LOGIN" . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($code != 334) {
      $this->error =
              array("error" => "AUTH not accepted from server",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }

    // Send encoded username
    fputs($this->smtp_conn, base64_encode($username) . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($code != 334) {
      $this->error =
              array("error" => "Username not accepted from server",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }

    // Send encoded password
    fputs($this->smtp_conn, base64_encode($password) . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($code != 235) {
      $this->error =
              array("error" => "Password not accepted from server",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }

    return true;
  }

  /**
   * Returns true if connected to a server otherwise false
   * @access private
   * @return bool
   */
  function Connected() {
    if (!empty($this->smtp_conn)) {
      $sock_status = socket_get_status($this->smtp_conn);
      if ($sock_status["eof"]) {
        # hmm this is an odd situation... the socket is
        # valid but we aren't connected anymore
        if ($this->do_debug >= 1) {
          echo "SMTP -> NOTICE:" . $this->CRLF .
          "EOF caught while checking if connected";
        }
        $this->Close();
        return false;
      }
      return true; # everything looks good
    }
    return false;
  }

  /**
   * Closes the socket and cleans up the state of the class.
   * It is not considered good to use this function without
   * first trying to use QUIT.
   * @access public
   * @return void
   */
  function Close() {
    $this->error = null; # so there is no confusion
    $this->helo_rply = null;
    if (!empty($this->smtp_conn)) {
      # close the connection and cleanup
      fclose($this->smtp_conn);
      $this->smtp_conn = 0;
    }
  }

  /*   * *************************************************************
   *                        SMTP COMMANDS                       *
   * *********************************************************** */

  /**
   * Issues a data command and sends the msg_data to the server
   * finializing the mail transaction. $msg_data is the message
   * that is to be send with the headers. Each header needs to be
   * on a single line followed by a <CRLF> with the message headers
   * and the message body being seperated by and additional <CRLF>.
   *
   * Implements rfc 821: DATA <CRLF>
   *
   * SMTP CODE INTERMEDIATE: 354
   *     [data]
   *     <CRLF>.<CRLF>
   *     SMTP CODE SUCCESS: 250
   *     SMTP CODE FAILURE: 552,554,451,452
   * SMTP CODE FAILURE: 451,554
   * SMTP CODE ERROR  : 500,501,503,421
   * @access public
   * @return bool
   */
  function Data($msg_data) {
    $this->error = null; # so no confusion is caused

    if (!$this->connected()) {
      $this->error = array(
          "error" => "Called Data() without being connected");
      return false;
    }

    fputs($this->smtp_conn, "DATA" . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $this->CRLF . $rply;
    }

    if ($code != 354) {
      $this->error =
              array("error" => "DATA command not accepted from server",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }

    # the server is ready to accept data!
    # according to rfc 821 we should not send more than 1000
    # including the CRLF
    # characters on a single line so we will break the data up
    # into lines by \r and/or \n then if needed we will break
    # each of those into smaller lines to fit within the limit.
    # in addition we will be looking for lines that start with
    # a period '.' and append and additional period '.' to that
    # line. NOTE: this does not count towards are limit.
    # normalize the line breaks so we know the explode works
    $msg_data = str_replace("\r\n", "\n", $msg_data);
    $msg_data = str_replace("\r", "\n", $msg_data);
    $lines = explode("\n", $msg_data);

    # we need to find a good way to determine is headers are
    # in the msg_data or if it is a straight msg body
    # currently I'm assuming rfc 822 definitions of msg headers
    # and if the first field of the first line (':' sperated)
    # does not contain a space then it _should_ be a header
    # and we can process all lines before a blank "" line as
    # headers.
    $field = substr($lines[0], 0, strpos($lines[0], ":"));
    $in_headers = false;
    if (!empty($field) && !strstr($field, " ")) {
      $in_headers = true;
    }

    $max_line_length = 998; # used below; set here for ease in change

    while (list(, $line) = @each($lines)) {
      $lines_out = null;
      if ($line == "" && $in_headers) {
        $in_headers = false;
      }
      # ok we need to break this line up into several
      # smaller lines
      while (strlen($line) > $max_line_length) {
        $pos = strrpos(substr($line, 0, $max_line_length), " ");

        # Patch to fix DOS attack
        if (!$pos) {
          $pos = $max_line_length - 1;
        }

        $lines_out[] = substr($line, 0, $pos);
        $line = substr($line, $pos + 1);
        # if we are processing headers we need to
        # add a LWSP-char to the front of the new line
        # rfc 822 on long msg headers
        if ($in_headers) {
          $line = "\t" . $line;
        }
      }
      $lines_out[] = $line;

      # now send the lines to the server
      while (list(, $line_out) = @each($lines_out)) {
        if (strlen($line_out) > 0) {
          if (substr($line_out, 0, 1) == ".") {
            $line_out = "." . $line_out;
          }
        }
        fputs($this->smtp_conn, $line_out . $this->CRLF);
      }
    }

    # ok all the message data has been sent so lets get this
    # over with aleady
    fputs($this->smtp_conn, $this->CRLF . "." . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $this->CRLF . $rply;
    }

    if ($code != 250) {
      $this->error =
              array("error" => "DATA not accepted from server",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }
    return true;
  }

  /**
   * Expand takes the name and asks the server to list all the
   * people who are members of the _list_. Expand will return
   * back and array of the result or false if an error occurs.
   * Each value in the array returned has the format of:
   *     [ <full-name> <sp> ] <path>
   * The definition of <path> is defined in rfc 821
   *
   * Implements rfc 821: EXPN <SP> <string> <CRLF>
   *
   * SMTP CODE SUCCESS: 250
   * SMTP CODE FAILURE: 550
   * SMTP CODE ERROR  : 500,501,502,504,421
   * @access public
   * @return string array
   */
  function Expand($name) {
    $this->error = null; # so no confusion is caused

    if (!$this->connected()) {
      $this->error = array(
          "error" => "Called Expand() without being connected");
      return false;
    }

    fputs($this->smtp_conn, "EXPN " . $name . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $this->CRLF . $rply;
    }

    if ($code != 250) {
      $this->error =
              array("error" => "EXPN not accepted from server",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }

    # parse the reply and place in our array to return to user
    $entries = explode($this->CRLF, $rply);
    while (list(, $l) = @each($entries)) {
      $list[] = substr($l, 4);
    }

    return $list;
  }

  /**
   * Sends the HELO command to the smtp server.
   * This makes sure that we and the server are in
   * the same known state.
   *
   * Implements from rfc 821: HELO <SP> <domain> <CRLF>
   *
   * SMTP CODE SUCCESS: 250
   * SMTP CODE ERROR  : 500, 501, 504, 421
   * @access public
   * @return bool
   */
  function Hello($host="") {
    $this->error = null; # so no confusion is caused

    if (!$this->connected()) {
      $this->error = array(
          "error" => "Called Hello() without being connected");
      return false;
    }

    # if a hostname for the HELO wasn't specified determine
    # a suitable one to send
    if (empty($host)) {
      # we need to determine some sort of appopiate default
      # to send to the server
      $host = "localhost";
    }

    // Send extended hello first (RFC 2821)
    if (!$this->SendHello("EHLO", $host)) {
      if (!$this->SendHello("HELO", $host))
        return false;
    }

    return true;
  }

  /**
   * Sends a HELO/EHLO command.
   * @access private
   * @return bool
   */
  function SendHello($hello, $host) {
    fputs($this->smtp_conn, $hello . " " . $host . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER: " . $this->CRLF . $rply;
    }

    if ($code != 250) {
      $this->error =
              array("error" => $hello . " not accepted from server",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }

    $this->helo_rply = $rply;

    return true;
  }

  /**
   * Gets help information on the keyword specified. If the keyword
   * is not specified then returns generic help, ussually contianing
   * A list of keywords that help is available on. This function
   * returns the results back to the user. It is up to the user to
   * handle the returned data. If an error occurs then false is
   * returned with $this->error set appropiately.
   *
   * Implements rfc 821: HELP [ <SP> <string> ] <CRLF>
   *
   * SMTP CODE SUCCESS: 211,214
   * SMTP CODE ERROR  : 500,501,502,504,421
   * @access public
   * @return string
   */
  function Help($keyword="") {
    $this->error = null; # to avoid confusion

    if (!$this->connected()) {
      $this->error = array(
          "error" => "Called Help() without being connected");
      return false;
    }

    $extra = "";
    if (!empty($keyword)) {
      $extra = " " . $keyword;
    }

    fputs($this->smtp_conn, "HELP" . $extra . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $this->CRLF . $rply;
    }

    if ($code != 211 && $code != 214) {
      $this->error =
              array("error" => "HELP not accepted from server",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }

    return $rply;
  }

  /**
   * Starts a mail transaction from the email address specified in
   * $from. Returns true if successful or false otherwise. If True
   * the mail transaction is started and then one or more Recipient
   * commands may be called followed by a Data command.
   *
   * Implements rfc 821: MAIL <SP> FROM:<reverse-path> <CRLF>
   *
   * SMTP CODE SUCCESS: 250
   * SMTP CODE SUCCESS: 552,451,452
   * SMTP CODE SUCCESS: 500,501,421
   * @access public
   * @return bool
   */
  function Mail($from) {
    $this->error = null; # so no confusion is caused

    if (!$this->connected()) {
      $this->error = array(
          "error" => "Called Mail() without being connected");
      return false;
    }

    fputs($this->smtp_conn, "MAIL FROM:<" . $from . ">" . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $this->CRLF . $rply;
    }

    if ($code != 250) {
      $this->error =
              array("error" => "MAIL not accepted from server",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }
    return true;
  }

  /**
   * Sends the command NOOP to the SMTP server.
   *
   * Implements from rfc 821: NOOP <CRLF>
   *
   * SMTP CODE SUCCESS: 250
   * SMTP CODE ERROR  : 500, 421
   * @access public
   * @return bool
   */
  function Noop() {
    $this->error = null; # so no confusion is caused

    if (!$this->connected()) {
      $this->error = array(
          "error" => "Called Noop() without being connected");
      return false;
    }

    fputs($this->smtp_conn, "NOOP" . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $this->CRLF . $rply;
    }

    if ($code != 250) {
      $this->error =
              array("error" => "NOOP not accepted from server",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }
    return true;
  }

  /**
   * Sends the quit command to the server and then closes the socket
   * if there is no error or the $close_on_error argument is true.
   *
   * Implements from rfc 821: QUIT <CRLF>
   *
   * SMTP CODE SUCCESS: 221
   * SMTP CODE ERROR  : 500
   * @access public
   * @return bool
   */
  function Quit($close_on_error=true) {
    $this->error = null; # so there is no confusion

    if (!$this->connected()) {
      $this->error = array(
          "error" => "Called Quit() without being connected");
      return false;
    }

    # send the quit command to the server
    fputs($this->smtp_conn, "quit" . $this->CRLF);

    # get any good-bye messages
    $byemsg = $this->get_lines();

    if ($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $this->CRLF . $byemsg;
    }

    $rval = true;
    $e = null;

    $code = substr($byemsg, 0, 3);
    if ($code != 221) {
      # use e as a tmp var cause Close will overwrite $this->error
      $e = array("error" => "SMTP server rejected quit command",
          "smtp_code" => $code,
          "smtp_rply" => substr($byemsg, 4));
      $rval = false;
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $e["error"] . ": " .
        $byemsg . $this->CRLF;
      }
    }

    if (empty($e) || $close_on_error) {
      $this->Close();
    }

    return $rval;
  }

  /**
   * Sends the command RCPT to the SMTP server with the TO: argument of $to.
   * Returns true if the recipient was accepted false if it was rejected.
   *
   * Implements from rfc 821: RCPT <SP> TO:<forward-path> <CRLF>
   *
   * SMTP CODE SUCCESS: 250,251
   * SMTP CODE FAILURE: 550,551,552,553,450,451,452
   * SMTP CODE ERROR  : 500,501,503,421
   * @access public
   * @return bool
   */
  function Recipient($to) {
    $this->error = null; # so no confusion is caused

    if (!$this->connected()) {
      $this->error = array(
          "error" => "Called Recipient() without being connected");
      return false;
    }

    fputs($this->smtp_conn, "RCPT TO:<" . $to . ">" . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $this->CRLF . $rply;
    }

    if ($code != 250 && $code != 251) {
      $this->error =
              array("error" => "RCPT not accepted from server",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }
    return true;
  }

  /**
   * Sends the RSET command to abort and transaction that is
   * currently in progress. Returns true if successful false
   * otherwise.
   *
   * Implements rfc 821: RSET <CRLF>
   *
   * SMTP CODE SUCCESS: 250
   * SMTP CODE ERROR  : 500,501,504,421
   * @access public
   * @return bool
   */
  function Reset() {
    $this->error = null; # so no confusion is caused

    if (!$this->connected()) {
      $this->error = array(
          "error" => "Called Reset() without being connected");
      return false;
    }

    fputs($this->smtp_conn, "RSET" . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $this->CRLF . $rply;
    }

    if ($code != 250) {
      $this->error =
              array("error" => "RSET failed",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }

    return true;
  }

  /**
   * Starts a mail transaction from the email address specified in
   * $from. Returns true if successful or false otherwise. If True
   * the mail transaction is started and then one or more Recipient
   * commands may be called followed by a Data command. This command
   * will send the message to the users terminal if they are logged
   * in.
   *
   * Implements rfc 821: SEND <SP> FROM:<reverse-path> <CRLF>
   *
   * SMTP CODE SUCCESS: 250
   * SMTP CODE SUCCESS: 552,451,452
   * SMTP CODE SUCCESS: 500,501,502,421
   * @access public
   * @return bool
   */
  function Send($from) {
    $this->error = null; # so no confusion is caused

    if (!$this->connected()) {
      $this->error = array(
          "error" => "Called Send() without being connected");
      return false;
    }

    fputs($this->smtp_conn, "SEND FROM:" . $from . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $this->CRLF . $rply;
    }

    if ($code != 250) {
      $this->error =
              array("error" => "SEND not accepted from server",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }
    return true;
  }

  /**
   * Starts a mail transaction from the email address specified in
   * $from. Returns true if successful or false otherwise. If True
   * the mail transaction is started and then one or more Recipient
   * commands may be called followed by a Data command. This command
   * will send the message to the users terminal if they are logged
   * in and send them an email.
   *
   * Implements rfc 821: SAML <SP> FROM:<reverse-path> <CRLF>
   *
   * SMTP CODE SUCCESS: 250
   * SMTP CODE SUCCESS: 552,451,452
   * SMTP CODE SUCCESS: 500,501,502,421
   * @access public
   * @return bool
   */
  function SendAndMail($from) {
    $this->error = null; # so no confusion is caused

    if (!$this->connected()) {
      $this->error = array(
          "error" => "Called SendAndMail() without being connected");
      return false;
    }

    fputs($this->smtp_conn, "SAML FROM:" . $from . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $this->CRLF . $rply;
    }

    if ($code != 250) {
      $this->error =
              array("error" => "SAML not accepted from server",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }
    return true;
  }

  /**
   * Starts a mail transaction from the email address specified in
   * $from. Returns true if successful or false otherwise. If True
   * the mail transaction is started and then one or more Recipient
   * commands may be called followed by a Data command. This command
   * will send the message to the users terminal if they are logged
   * in or mail it to them if they are not.
   *
   * Implements rfc 821: SOML <SP> FROM:<reverse-path> <CRLF>
   *
   * SMTP CODE SUCCESS: 250
   * SMTP CODE SUCCESS: 552,451,452
   * SMTP CODE SUCCESS: 500,501,502,421
   * @access public
   * @return bool
   */
  function SendOrMail($from) {
    $this->error = null; # so no confusion is caused

    if (!$this->connected()) {
      $this->error = array(
          "error" => "Called SendOrMail() without being connected");
      return false;
    }

    fputs($this->smtp_conn, "SOML FROM:" . $from . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $this->CRLF . $rply;
    }

    if ($code != 250) {
      $this->error =
              array("error" => "SOML not accepted from server",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }
    return true;
  }

  /**
   * This is an optional command for SMTP that this class does not
   * support. This method is here to make the RFC821 Definition
   * complete for this class and __may__ be implimented in the future
   *
   * Implements from rfc 821: TURN <CRLF>
   *
   * SMTP CODE SUCCESS: 250
   * SMTP CODE FAILURE: 502
   * SMTP CODE ERROR  : 500, 503
   * @access public
   * @return bool
   */
  function Turn() {
    $this->error = array("error" => "This method, TURN, of the SMTP " .
        "is not implemented");
    if ($this->do_debug >= 1) {
      echo "SMTP -> NOTICE: " . $this->error["error"] . $this->CRLF;
    }
    return false;
  }

  /**
   * Verifies that the name is recognized by the server.
   * Returns false if the name could not be verified otherwise
   * the response from the server is returned.
   *
   * Implements rfc 821: VRFY <SP> <string> <CRLF>
   *
   * SMTP CODE SUCCESS: 250,251
   * SMTP CODE FAILURE: 550,551,553
   * SMTP CODE ERROR  : 500,501,502,421
   * @access public
   * @return int
   */
  function Verify($name) {
    $this->error = null; # so no confusion is caused

    if (!$this->connected()) {
      $this->error = array(
          "error" => "Called Verify() without being connected");
      return false;
    }

    fputs($this->smtp_conn, "VRFY " . $name . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply, 0, 3);

    if ($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $this->CRLF . $rply;
    }

    if ($code != 250 && $code != 251) {
      $this->error =
              array("error" => "VRFY failed on name '$name'",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply, 4));
      if ($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] .
        ": " . $rply . $this->CRLF;
      }
      return false;
    }
    return $rply;
  }

  /*   * *****************************************************************
   *                       INTERNAL FUNCTIONS                       *
   * **************************************************************** */

  /**
   * Read in as many lines as possible
   * either before eof or socket timeout occurs on the operation.
   * With SMTP we can tell if we have more lines to read if the
   * 4th character is '-' symbol. If it is a space then we don't
   * need to read anything else.
   * @access private
   * @return string
   */
  function get_lines() {
    $data = "";
    while ($str = fgets($this->smtp_conn, 515)) {
      if ($this->do_debug >= 4) {
        echo "SMTP -> get_lines(): \$data was \"$data\"" .
        $this->CRLF;
        echo "SMTP -> get_lines(): \$str is \"$str\"" .
        $this->CRLF;
      }
      $data .= $str;
      if ($this->do_debug >= 4) {
        echo "SMTP -> get_lines(): \$data is \"$data\"" . $this->CRLF;
      }
      # if the 4th character is a space then we are done reading
      # so just break the loop
      if (substr($str, 3, 1) == " ") {
        break;
      }
    }
    return $data;
  }

}

?>